CN214167724U

CN214167724U - Sedimentation type sludge in-situ treatment device

Info

Publication number: CN214167724U
Application number: CN202022411584.5U
Authority: CN
Inventors: 胡明明; 潘正国; 冷家明; 朱霖毅; 周一届; 徐项哲
Original assignee: Wuxi Delinhai Environmental Protection Technology Co ltd
Current assignee: Wuxi Delinhai Environmental Protection Technology Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-09-10
Anticipated expiration: 2030-10-26

Abstract

The utility model relates to an environmental protection equipment technical field especially relates to a subside formula silt normal position processing apparatus. The utility model provides a subside formula silt normal position processing apparatus which characterized in that: comprises a trap pipe (2) and a mud conveying pipe; the trap pipe (2) is arranged in the lake bed (7) or the river bed, and a trap cavity for storing the sludge (5) is formed inside the trap pipe (2); the lower end of the mud conveying pipe extends into the trap cavity of the trap pipe (2), and mud at the bottom of the trap cavity can be pumped out. The scheme performs drying and dewatering treatment on the sludge in situ, so that secondary pollution of the cleared sludge to the environment is reduced; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.

Description

Sedimentation type sludge in-situ treatment device

Technical Field

The utility model relates to an environmental protection equipment technical field especially relates to a subside formula silt normal position processing apparatus.

Background

With the continuous improvement of living standard and the gradual enhancement of environmental awareness of people, people pay great attention to the quality of surrounding living environment and living space. In the face of increasingly worsened environments, the sound of improvement and treatment is higher and higher. Wherein the protection and the pollution control of the water body environment are particularly prominent. Due to the great treatment difficulty of various water body environments (including reservoirs, lakes, rivers, ditches and the like) in cities and surrounding areas, a large amount of sludge is deposited at the water bottom after years of treatment, the water body environment is seriously influenced, the water quality is blackened and smelled, and the problems of disturbance of residents occur occasionally. The water body dredging is the whole process of cutting, collecting, extracting and conveying sludge of river channels, lakes and the like from the water bottom to a specific area for centralized environmental protection treatment. Domestic garbage and construction garbage in the urban sludge are accumulated into mountains, and a large amount of methane, toxic gas, odor and even harmful pollutants such as heavy metals are accumulated at the bottom of lakes. How to carry out environment-friendly dredging and how to treat the cleared sludge is a problem which is discussed in the international society at present. If a certain link is not well treated, serious and large-area secondary pollution is brought to the dredging project, and the consequences are not imaginable.

Pollutants in the sludge are mainly distributed in the floating sludge and the flowing sludge in the area with the depth of 0-20 cm on the bottom sludge shallow layer, the upper part of the sludge is slurry (floating sludge), the lower part of the sludge is flowing plastic (flowing sludge) and has odor, the sludge is generally black or gray black, the geological deposition age is newer, the organic matter deposition speed is high, and the sludge is a product which is influenced by human activities (eutrophication or enclosure culture) to the water environment for nearly decades. The partial sludge presents the characteristic of bed load, is easy to be lifted under the action of comprehensive power factors such as wind waves, wind currents and the like, and is gathered in the downward wind direction under the action of wind power boosting. The polluted layer of the sludge can be resuspended after being slightly stirred in the water body, and is a main accumulation reservoir and release source of endogenous pollutants in the water body. The cleaning of the bed load sludge can visually bring the nutrient salt and the heavy metal which pollute the water body out of the water body.

The existing sediment dredging technology mainly comprises water conservancy scouring, pump pumping, mud dredging, blowing filling, shipping, stirring and the like, the technologies not only stir the sediment and accelerate the release of nutrient salts in the sediment into a water body, but also occupy land resources because the cleared sediment needs to be dehydrated, stacked and buried, secondary pollution is easy to cause, and even under the conditions of lack of scientific cognition and deep investigation, the sediment is dug out and cleaned, so that the original lake bed river water ecological system is broken. In view of the above drawbacks, it is necessary to improve equipment used in the prior art to realize in-situ treatment and reduce secondary damage generated during sludge disposal by providing a sludge capturing ditch which is excavated at a certain depth and is driven by natural hydrodynamic force, wherein floating sludge and flowing sludge fall to the bottom of the ditch when passing through the ditch.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide a sedimentation type sludge in-situ treatment device, which performs drying and dewatering treatment on sludge in situ, so as to reduce secondary pollution of the cleared sludge to the environment; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a subside formula silt normal position processing apparatus which characterized in that: comprises a trap pipe and a mud conveying pipe;

the trap pipe is used for being placed in a lake bed or a river bed, and a trap cavity for storing sludge is formed in the trap pipe;

the lower end of the mud conveying pipe extends into the trap cavity of the trap pipe, and mud at the bottom of the trap cavity can be pumped out.

The above technical scheme is adopted in the utility model, this technical scheme relates to a subside formula silt normal position processing apparatus, and this processing apparatus includes trap pipe and defeated mud pipe, and wherein trap pipe is used for putting into lake bed or riverbed in, and the silt of trap intracavity and the silt of outside of tubes are separated to the trap pipe. When sludge is treated, the sludge flows into the trap cavity under the action of manpower or water body flow, and the sludge in the trap pipe (especially the sludge at the bottom position) is gradually dried under the actions of natural sedimentation, natural pressure and heat generated by the natural anaerobic digestion of the sludge. The lower end of the mud conveying pipe extends into a trap cavity of the trap pipe, and the mud in the trap pipe is removed from the part, located at the bottom of the trap pipe, of the lowest mud water content.

Compared with the existing sludge cleaning, the scheme has the advantages that the sludge is dried and dehydrated in situ, so that the secondary pollution of the cleaned sludge to the environment is reduced; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.

Preferably, the trap tube comprises a side wall arranged in a surrounding manner, and a trap cavity is formed in a region surrounded by the side wall; the lower end part of the trap pipe is not closed, and the lower end part of the mud conveying pipe is lower than the lower end part of the trap pipe. On the basis of the technical scheme, the sludge drying condition at the bottom of the sludge conveying pipe depends on the depth of the trap pipe and the extraction position of the sludge conveying pipe to a great extent. The lower end part of the trap pipe is not closed, and the lower end part of the mud conveying pipe is lower than the lower end part of the trap pipe; the reason for this is that: the trap tube defines the extent of natural settling of the sludge, which includes a region below the trap tube, as this region is primarily subjected to the pressure of settling of the sludge in the trap tube above. In this case, the lower end of the sludge transporting pipe is set lower than the lower end of the trap pipe, so that the natural settling range of the sludge is limited by the trap pipe as much as possible. Considering the difficulty of the arrangement of the trap pipes, the deeper the arrangement of the trap pipes, the greater the difficulty, and the scheme can be reversely understood as reducing the arrangement depth of the trap pipes as much as possible when the arrangement depth is expanded to a proper natural sedimentation depth (the extraction depth of the mud conveying pipe).

In another embodiment, the trap tube includes a bottom plate and a sidewall disposed around an edge of the bottom plate, the sidewall and the bottom plate defining a trap cavity therebetween; the lower end of the mud conveying pipe is arranged in the lower area of the trap cavity.

Preferably, the trap further comprises a plurality of mud guide grooves which are radially arranged relative to the trap pipe, the depth of the near end of each mud guide groove is larger than that of the far end, and the near end of each mud guide groove points to the trap cavity. The technical scheme is that a sludge guide groove is further arranged, and through the arrangement of the sludge guide groove, sludge far away from the sedimentation type sludge in-situ treatment device flows into the sludge guide groove under the action of lake flow and then enters the trap pipe from the sludge guide groove, so that natural collection of the sludge is realized.

Preferably, a mud conveying pump is arranged on the mud conveying pipe and is positioned in the trap pipe.

A settling type sludge in-situ treatment method is characterized by comprising the following steps: the method comprises the following steps:

s1: placing the trap pipe and a sludge conveying pipe in the trap cavity into a lake bed or a river bed, and naturally or artificially flowing sludge into the trap pipe until the trap pipe is full and does not settle;

s2: sludge at the bottom of the trap pipe is gradually dried under the actions of natural sedimentation, natural pressure and heat generated by the naturally occurring anaerobic digestion of the sludge; after the drying water content is lower than a preset standard, the sludge conveying pipe extracts the dried sludge at the bottom of the trap pipe; meanwhile, the upper end of the trap pipe is supplemented with silt in a natural or artificial mode.

S3: until the sludge treatment in the trap pipe treatment range is completed.

Preferably, the step S1 includes disposing mud guide grooves or digging mud guide grooves disposed along the radial direction of the trap pipe; the sludge close to the trap opening of the sedimentation type sludge in-situ treatment device directly flows into the trap pipe under the action of lake flow, and the sludge far away from the sedimentation type sludge in-situ treatment device flows into the sludge guide groove under the action of the lake flow and then enters the trap pipe from the sludge guide groove, so that the natural collection of the sludge is realized.

Drawings

FIG. 1 is a sectional view of a settling sludge in-situ treating apparatus according to example 1.

FIG. 2 is a top view of the settling sludge in-situ treatment apparatus of example 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1:

as shown in fig. 1 and 2, the present embodiment relates to a settling sludge in-situ treatment device, which comprises a trap pipe 2, a sludge conveying pipe 3, and a plurality of sludge guide grooves 6 arranged in a radial direction relative to the trap pipe 2.

The trap pipe 2 is used for being placed in a lake bed 7 or a river bed, and a trap cavity 21 for storing the sludge 5 is formed inside the trap pipe 2. The depth of the near end of the mud guide groove 6 is larger than that of the far end, the near end points to the trap cavity 21, and the mud far away from the sedimentation type mud in-situ treatment device flows into the mud guide groove under the action of lake flow and then enters the trap pipe from the mud guide groove, so that the natural collection of the mud is realized. The mud guiding groove 6 in the scheme is used as a trap type mud in-situ treatment device, is a groove component and is an integral part of the device. Of course, the mud guiding trough 6 may also be a ditch which is temporarily dug on the riverbed, and at this time, the mud guiding trough 6 is not used as a component of the settling type sludge in-situ treatment device.

The upper end of the mud conveying pipe 3 is higher than the water surface 4, and the lower end of the mud conveying pipe 3 extends into the trap cavity 21 of the trap pipe 2. The mud conveying pipe 3 is provided with a mud conveying pump 31, the mud conveying pump 31 is positioned inside the trap pipe 2, and the mud conveying pump 31 provides power for the mud conveying pipe 3 and can pump out mud at the bottom of the trap cavity 21. In another embodiment, the mud pump 31 may be disposed outside, as long as it can provide power for the mud pipe 3. The treatment device comprises a trap pipe 2 for placing in a lake or river bed and a sludge conveying pipe 3 for separating sludge in a trap chamber 21 from sludge outside the pipe. When sludge is treated, the sludge flows into the trap cavity 21 under the action of manual work or water body flow, and the sludge in the trap pipe 2 (especially the sludge at the bottom position) is gradually dried under the actions of natural sedimentation, natural pressure and heat generated by the naturally-occurring anaerobic digestion of the sludge. The lower end of the sludge conveying pipe 3 extends into the trap cavity 21 of the trap pipe 2, and sludge in the trap pipe is removed from the part with the lowest water content of sludge at the bottom of the trap pipe.

In a preferred embodiment as shown in fig. 1, the trap tube 2 includes a side wall arranged in a surrounding manner, and a trap cavity 21 is formed in an area surrounded by the side wall; the lower end part of the trap pipe 2 is not closed, and the lower end part of the mud conveying pipe 3 is lower than the lower end part of the trap pipe 2. On the basis of the technical scheme, the sludge drying condition at the bottom of the sludge conveying pipe 3 depends on the depth of the trap pipe 2 and the extraction position of the sludge conveying pipe 3 to a great extent. The scheme limits the lower end part of the trap pipe 2 to be not closed, and the lower end part of the mud conveying pipe 3 is lower than the lower end part of the trap pipe 2; the reason for this is that: the trap tube 2 defines the extent of natural settling of the sludge, which includes the area below the trap tube 2, since this area is mainly subjected to the settling pressure of the sludge in the trap tube 2 above. In this case, the lower end of the sludge transporting pipe 3 is set lower than the lower end of the trap pipe 2 in order to limit the extent of natural sedimentation of the sludge by the trap pipe 2 as much as possible. Considering the difficulty of the arrangement of the trap pipe 2, the deeper the arrangement of the trap pipe 2, the greater the difficulty, and the scheme can be reversely understood as reducing the arrangement depth of the trap pipe 2 as much as possible when the proper natural sedimentation depth (the extraction depth of the mud conveying pipe 3) is expanded. In another embodiment (not shown), the trap tube comprises a bottom plate and a side wall arranged around the edge of the bottom plate, and a trap cavity is formed between the side wall and the bottom plate; the lower end of the mud conveying pipe is arranged in the lower area of the trap cavity. The difference between the two schemes is whether the lower end of the trap pipe is closed, which can be determined according to the environmental protection requirement of the project site: if the geology of the project selection area has cracks, karst caves and the like, the project selection area needs to be closed, and if the geology of the project selection area is rocks and the like, the project selection area does not need to be closed.

In summary, compared with the existing sludge cleaning, the settling sludge in-situ treatment device described in the embodiment performs drying and dewatering treatment on the sludge in situ, so that the secondary pollution of the cleaned sludge to the environment is reduced; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.

Example 2:

the embodiment relates to a settling sludge in-situ treatment method, which specifically adopts the settling sludge in-situ treatment device in the embodiment 1, and specifically comprises the following steps:

s1: placing the trap pipe 2 and the mud conveying pipe 3 in the trap cavity 21 into a lake bed 7 or a river bed, and arranging a mud guide groove 6 or excavating and arranging a mud guide groove 6 along the radial direction of the trap pipe 2; the sludge close to the trap opening of the sedimentation type sludge in-situ treatment device directly flows into the trap pipe 2 under the action of lake flow, the sludge far away from the sedimentation type sludge in-situ treatment device flows into the sludge guide groove 6 under the action of the lake flow, and then enters the trap pipe 2 from the sludge guide groove 6 until the device is full and does not subside any more, so that the natural collection of the sludge is realized. In an alternative embodiment, the sludge guide trough 6 may also be omitted, and the sludge 5 is manually fed into the trap pipe 2.

S2: sludge at the bottom of the trap pipe 2 is gradually dried under the actions of natural sedimentation, natural pressure and heat generated by the naturally occurring anaerobic digestion of the sludge; after the drying water content is lower than the preset standard, the dried sludge at the bottom of the trap pipe 2 is pumped out by a sludge conveying pipe 3 in a pumping or sucking mode; meanwhile, the upper end of the trap pipe is supplemented with silt 5 in a natural or artificial mode.

S3: until the sludge treatment within the treatment range of the trap pipe 2 is completed.

How to judge whether the drying water content of the sludge at the bottom of the trap pipe 2 is lower than a preset standard in the settling sludge in-situ treatment method can be judged by detecting the water content of the sludge pumped out by the sludge conveying pipe 3 in real time and judging according to a detection result. In practical implementation, when the sludge conveying pipe 3 extracts sludge, the upper end of the trap pipe 2 is supplemented with the sludge, so that the sludge deposition time is insufficient in the extracting process and cannot reach the drying standard, at the moment, the sludge conveying pipe 3 needs to be stopped to be continuously extracted, and the operation is continued after a period of time.

The effect of using the settling sludge in-situ treatment method can also refer to the content described in the description of the treatment device in the embodiment 1; in the whole, the scheme forms a trap cavity 21 through the trap pipe 2, so that the sludge is naturally settled in a limited range, and the pressure of a soil layer generated by settlement and the pressure of river and lake water above the soil layer cooperate with the sludge to generate heat under the action of naturally occurring anaerobic digestion; the sludge at the bottom of the trap pipe 2 can be promoted to be gradually dried; and finally, sludge reaching a certain drying rate is preferentially pumped out, so that the secondary pollution of the cleared sludge to the environment is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. The utility model provides a subside formula silt normal position processing apparatus which characterized in that: comprises a trap pipe (2) and a mud conveying pipe (3);

the trap pipe (2) is arranged in the lake bed (7) or the river bed, and a trap cavity (21) for storing the sludge (5) is formed inside the trap pipe (2);

the lower end of the mud conveying pipe (3) extends into the trap cavity (21) of the trap pipe (2) and can pump out mud at the bottom of the trap cavity (21);

the trap is characterized by further comprising a plurality of mud guide grooves (6) which are radially arranged relative to the trap pipe (2), wherein the depth of the near end of each mud guide groove (6) is larger than that of the far end, and the near end points to the trap cavity (21).

2. A sedimentation sludge in-situ treatment apparatus as claimed in claim 1, wherein: the trap tube (2) comprises a side wall arranged in a surrounding manner, and a trap cavity (21) is formed in an area surrounded by the side wall; the lower end part of the trap pipe (2) is not closed, and the lower end part of the mud conveying pipe (3) is lower than the lower end part of the trap pipe (2).

3. A sedimentation sludge in-situ treatment apparatus as claimed in claim 1, wherein: the trap pipe (2) comprises a bottom plate and a side wall arranged around the edge of the bottom plate, and a trap cavity (21) is formed between the side wall and the bottom plate; the lower end of the mud conveying pipe is arranged in the lower area of the trap cavity (21).

4. A sedimentation sludge in-situ treatment apparatus as claimed in claim 1, wherein: the mud conveying pipe (3) is provided with a mud conveying pump (31), and the mud conveying pump (31) is positioned inside the trap pipe (2).